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Oracle 1Z0-501 Exam Syllabus Topics:
| Section | Weight | Objectives |
| Topic 1: Java Basics | 15% | - Language fundamentals
- 1. Identifiers, keywords, and data types
- 2. Variable scope and initialization
|
| Topic 2: Java I/O | 10% | - File and stream classes
- Reading/writing files and character encoding
|
| Topic 3: Collections and Generics | 15% | - Generics fundamentals
- Collection framework
- 1. List, Set, Map, and Queue
- 2. Comparable and Comparator
|
| Topic 4: Java API: java.lang | 15% | - Math and Object class
- Wrapper classes
- String and StringBuffer
|
| Topic 5: Flow Control and Exceptions | 15% | - Control structures
- 1. if/else, switch, loops
- 2. Break, continue, and assertions
- Exception handling
- 1. try, catch, finally, throw, throws
- 2. Exception hierarchy
|
| Topic 6: Concurrency | 10% | - Synchronization and thread safety
- Thread creation and lifecycle
|
| Topic 7: Object-Oriented Concepts | 20% | - Classes, inheritance, and interfaces
- 1. Polymorphism and casting
- 2. Access modifiers and encapsulation
- 3. Overloading and overriding
|
Oracle Java Certified Programmer Sample Questions:
Question 1
Given:
1 . public class X (
2 . public object m () {
3 . object o = new float (3.14F);
4 . object [] oa = new object [1];
5 . oa[0]= o;
6 . o = null;
7 . return oa[0];
8 . }
9 . }
When is the float object created in line 3, eligible for garbage collection?
A. Just after line 5
B. Never in this method.
C. Just after line 7 (that is, as the method returns)
D. Just after line 6
Question 2
Which method is an appropriate way to determine the cosine of 42 degrees?
A. Double d = Math.cos(42);
B. Double d = Math.cos(Math.toRadians(42));
C. Double d = Math.cosine(42);
D. Double d = Math.cosine(Math.toRadians(42));
E. Double d = Math.cos(Math.toDegrees(42));
Question 3
Which two can be used to create a new Thread? (Choose Two)
A. Implement java.lang.Thread and implement the start method.
B. Implement java.lang.thread and implement the run method.
C. Extend java.lang.Runnable and override the start method.
D. Extend java.lang.Thread and override the run method.
E. Implement java.lang.Runnable and implement the run method.
Question 4
How can you create a listener class that receives events when the mouse is moved?
A. By extending MouseMotionListener.
B. By extending MouseListener.
C. Either by extending MouseMotionListener or extending MouseListener.
D. Either by implementing MouseMotion Listener or implementing MouseListener.
E. By implementing MouseListener.
F. By implementing MouseMotionListener.
Question 5
Given:
1 . public class WhileFoo {
2 . public static void main (String []args){
3 . int x= 1, y = 6;
4 . while (y--){x--;}
5 . system.out.printIn("x=" + x "y =" + y);
6 .}
7 . }
What is the result?
A. Compilation will fail.
B. The output is x = 7 y = -1
C. The output is x = 7 y = 0
D. The output is x = 6 y = -1
E. The output is x = 6 y = 0
Solutions:
Question 1 Answer: B | Question 2 Answer: B | Question 3 Answer: D,E | Question 4 Answer: F | Question 5 Answer: A |